[英]Div animation with Javascript after clicking on a link - how?
I would like to animate a div after clicking on a link. 单击链接后,我想为div设置动画。 When you click on "About", the should change its height.
当您点击“关于”时,应当更改其高度。 Height is set to '0em' in the CSS file.
CSS文件中的高度设置为“ 0em”。 It works if I write "document.getElementById('about-div').style.height = '';", but it will jump suddenly, not animated.
如果我编写“ document.getElementById('about-div')。style.height =”;”,它将起作用,但是它会突然跳动,而不是动画。 Now I tried this code but unfortunately, it doesn't want to work:
现在,我尝试了这段代码,但不幸的是,它不想工作:
CSS: CSS:
.about-div {position:absolute;top:100vh;left:0em;width:100vw;height:0em;z-index:10000;background:white;overflow:hidden;}
.open {
-webkit-animation: open 1s ease-in 1 forwards;
animation: open 1s ease-in 1 forwards;
}
.is-paused {
-webkit-animation-play-state: paused;
animation-play-state: paused;
}
@keyframes open {
0% {height:0em;}
1% {height:'';}
100% {height:'';}
}
@-webkit-keyframes open {
0% {height:0em;}
1% {height:'';}
100% {height:'';}
}
@keyframes close {
0% {height:'';}
100% {height:0em;}
}
@-webkit-keyframes close {
0% {height:'';}
100% {height:0em;}
}
HTML: HTML:
<a href="javascript:openAbout()">About</a>
<div class="about-div open is-paused">
<p>Some Content</p>
</div>
...and the Javascript code: ...以及Javascript代码:
function openAbout() {
<script>
document.querySelector('.about-div').classList.remove('is-paused');
</script>
}
Any idea about it? 有什么想法吗?
Please see my fiddle . 请看我的小提琴 。
You should remove the script
tags from inside your JS function. 您应该从JS函数内部删除
script
标签。 All parts of your JS should be inside the script tags like below. JS的所有部分都应位于以下脚本标记内。
<script>
function openAbout() {
document.querySelector('.about-div').classList.remove('is-paused');
}
</script>
Also, I think using animation to animate the height is a bit cumbersome, so I used transition instead. 另外,我认为使用动画为高度设置动画有点麻烦,因此我改用了过渡。 Please see demo below (I removed the bottom positioning for easier viewing, you can put it back when you use it).
请参阅下面的演示(为了方便查看,我删除了底部位置,可以在使用时放回去)。
function openAbout() { document.querySelector('.about-div').classList.remove('is-paused'); }
body { background: #ddd; } .about-div { position:absolute; left:0em; width:100vw; z-index:10000; background:white; overflow:hidden; transition: max-height 5s; } .open { max-height: 999px; } .is-paused { max-height: 0px; }
<a href="#" onclick="openAbout()">About</a> <div class="about-div open is-paused"> <p>Some Content</p> </div>
The function needs to be in script tags, not script tags inside the function. 该功能必须位于脚本标签中,而不是功能内部的脚本标签中。
<script>
function openAbout() {
document.querySelector('.about-div').classList.remove('is-paused');
}
</script>
At first: 首先:
'href' isn't intended for calling functions. “ href”不适用于调用函数。 Most HTML elements have an 'onclick' tag for doing that.
大多数HTML元素都具有一个“ onclick”标记。
<a href="#" onclick="openAbout()">About</a>
And you need to remove the '' tags like mentioned so your code looks like: 而且您需要删除如前所述的''标签,因此您的代码应如下所示:
function openAbout() {
document.querySelector('.about div').classList.remove('is-paused');
}
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